Generate different files for different options?

[jstcki]

Maybe it would be useful if fundamentally incompatible files (e.g. with different coordinate systems) would be generated with different filenames. This could reduce potential confusion/errors when make clean hasn't been run before using different options.

Candidates:

• Coordinate systems: *-ch1903.json, *-wgs84.json
• Years: *-2013.json, *-2012.json etc.
• Size of projected files: *-950x500.json, *-500x400.json etc.

But I worry that this would lead to very complex Makefile rules, especially when combining multiple options.